EPA is now providing the public with free access to the Toxic Substances Control Act inventory of chemicals in commerce. The inventory contains 84,000 entries, although not all of these chemicals are currently in production. And the identities of 17,000 inventory listings do not appear on the public version of the TSCA inventory because manufacturers have claimed the chemicals’ identities as trade secrets. Until now, the nonconfidential version of the inventory was available only . . .